Leetcode 3049. Earliest Second to Mark Indices II

Given initial counts and a time-ordered list of indices that can be "reset" each second, determine the earliest second by which you can schedule per-second actions (decrement any element by 1, reset the designated index to any nonnegative value, or mark an index whose value is 0) to mark every index, or return -1 if impossible. The problem is a scheduling/resource-allocation feasibility question—typically solved by checking if all indices can be marked by time t (using greedy accounting of available resets and decrements) and binary-searching the minimum t.